Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 31, 2023	Aug. 31, 2022	Aug. 31, 2023	Aug. 31, 2022
Income Statement [Abstract]
Sales	$ 398,542	$ 406,710	$ 789,415	$ 613,844
Costs and Expenses
Cost of sales	301,296	305,155	595,150	452,236
Gross margin	97,246	101,555	194,265	161,608
Selling, general and administrative	36,239	37,414	67,762	69,558
Operating income from continuing operations	61,007	64,141	126,503	92,050
Interest expense	27,770	28,144	56,476	35,615
Equity in (earnings) loss of unconsolidated subsidiaries	(974)	0	(2,394)	0
Other (income) expense, net	(88)	55	(50)	28
Income from continuing operations before income taxes	34,299	35,942	72,471	56,407
Income tax expense	5,967	10,822	15,617	15,922
Net income from continuing operations	28,332	25,120	56,854	40,485
Income from discontinued operations, net of tax	0	6,737	0	15,449
Loss on disposal of discontinued operations, net of tax	0	(89,427)	0	(89,427)
Net income (loss) from discontinued operations	0	(82,690)	0	(73,978)
Net income (loss)	28,332	(57,570)	56,854	(33,493)
Dividends on preferred stock	(3,600)	(1,040)	(7,200)	(1,040)
Net income (loss) available to common shareholders	$ 24,732	$ (58,610)	$ 49,654	$ (34,533)
Basic earnings (loss) per share
Earnings (loss) per common share from continuing operations (in dollars per share)	$ 0.99	$ 0.97	$ 1.99	$ 1.59
Earnings (loss) per common share from discontinued operations (in dollars per share)	0	(3.33)	0	(2.99)
Basic earnings per common share (usd per share)	0.99	(2.36)	1.99	(1.39)
Diluted Earnings (Loss) Per Share [Abstract]
Diluted earnings per common share (usd per share)	0.97	(1.91)	1.95	(1.13)
Earnings (loss) per common share from continuing operations (in dollars per share)	0.97	0.93	1.95	1.57
Earnings (loss) per common share from discontinued operations (in dollars per share)	$ 0	$ (2.85)	$ 0	$ (2.70)
Weighted average shares outstanding
Weighted average number common shares, basic (shares)	25,054,000	24,836,000	24,997,000	24,772,000
Weighted average number common shares, diluted (shares)	29,210,000	29,059,000	29,196,000	27,428,000
Cash dividends declared per common share (usd per share)	$ 0.17	$ 0.17	$ 0.34	$ 0.34